Triple staircase. Beautiful and fascinating. And somewhat difficult to comprehend. Which set of concurrent stairs takes you to which floors? This one is in the Museo de Pobo Galego in the pilgrim town of Santiago de Compostela. It kind of begs a photo, no? The only other multiple staircase I’ve encountered in my travels was a double one in the Château de Chambord in France’s Loire Valley in 1972. That one, it’s said, was designed by Leonardo da Vinci. True? (It allowed two people to ascend or descend at the same time without encountering one another, which came in handy when the king didn’t want to see his servants. And vice versa.) This one bore no such historical import. It was just a beautiful puzzling treat.